Home / 989,730.72-1,483,272.56-515,420.32

Finding the Fourth Proportional to 989,730.72, 1,483,272.56 and 515,420.32

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Solution

The fourth proportional to 989,730.72, 1,483,272.56 and 515,420.32 is: 772,441.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,730.72 : 1,483,272.56 = 515,420.32 : x
  2. Step 2: Convert to fraction form
    989,730.72/1,483,272.56 = 515,420.32/x
  3. Step 3: Cross multiply
    989,730.72x = 1,483,272.56 × 515,420.32
  4. Step 4: Simplify right side
    989,730.72x = 764,508,817,522.42
  5. Step 5: Solve for x
    x = 764,508,817,522.42/989,730.72
  6. Step 6: Final answer
    x = 772,441.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.